<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    span {
      display: inline-block;
      width: 100px;
      background-color: aqua;
      border: 1px solid #ccc;
      text-align: center;
      color: #fff;
      margin: 5px;

    }
  </style>
</head>

<body>
  <script>
    // function dayin() {
    //   document.write('hello')
    // }
    // dayin()


    function sheets99() {
      let c
      for (let i = 1; i <= 9; i++) {

        for (let j = 1; j <= i; j++) {

          document.write(`<span>${j}*${i}=${i * j}</span>`)

        }
        document.write('<br>')
      }
    }
    sheets99()
    sheets99()
    sheets99()
  </script>
</body>

</html>